Fool's paradise Meaning, Definition & Usage

  1. noun an illusory state of wellbeing

WordNet

Definitions
  1. a name applied to a limbo (see under Limbo) popularly believed to be the region of vanity and nonsense. Hence, any foolish pleasure or condition of vain self-satistaction.
Definitions
  1. . See under Fool, and Limbo.

Webster 1913